Jan 19, 2006 #1 B bigjian Newbie level 1 Joined Feb 1, 2005 Messages 1 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 8 pim rf diplex hi when i test some diplexer filter (Cavity filter) ,use summitek instrument SI-1800b,the PIM value is very bad ,so someone can tell me in a diplexer filter what will affact the PIM bad ,and how can i improve ,thanks very much ..[[/quote]
pim rf diplex hi when i test some diplexer filter (Cavity filter) ,use summitek instrument SI-1800b,the PIM value is very bad ,so someone can tell me in a diplexer filter what will affact the PIM bad ,and how can i improve ,thanks very much ..[[/quote]
Jan 19, 2006 #2 J jallem Advanced Member level 1 Joined Jul 23, 2005 Messages 450 Helped 73 Reputation 146 Reaction score 10 Trophy points 1,298 Activity points 4,993 diplexer filter PIM maybe this wil help you: **broken link removed**
Feb 8, 2006 #3 S Somkit Newbie level 5 Joined Jan 30, 2006 Messages 9 Helped 1 Reputation 2 Reaction score 0 Trophy points 1,281 Activity points 1,388 Re: diplexer filter PIM Hi How much IP3 level ? 1. I/P connector soldering point very bad. 2. I don't know you diplexer configuration (body)? If made from a metal every connecting point must be tighten if possible you should soldering. 3. The inner connector metal difference from feed point metal, I mean the electric characteristic of two kind metal difference => effect to PIM. 4. If you using Refected Mode pls check S11 (Return loss) . I mean if S11 bad a PIM signal easily return to your Summitek mechine. 5. OK , On Forward Mode check S22 (O/P connector) same S11. 6. If S21 of your DUT loss than your spect, IP3 level on Forward Mode better (Loss in your DUT). 7. I thing you should be check you mechine with Dummy Load first and you can find PIM knowledge on owner machine web. **broken link removed** Regards. Somkit.
Re: diplexer filter PIM Hi How much IP3 level ? 1. I/P connector soldering point very bad. 2. I don't know you diplexer configuration (body)? If made from a metal every connecting point must be tighten if possible you should soldering. 3. The inner connector metal difference from feed point metal, I mean the electric characteristic of two kind metal difference => effect to PIM. 4. If you using Refected Mode pls check S11 (Return loss) . I mean if S11 bad a PIM signal easily return to your Summitek mechine. 5. OK , On Forward Mode check S22 (O/P connector) same S11. 6. If S21 of your DUT loss than your spect, IP3 level on Forward Mode better (Loss in your DUT). 7. I thing you should be check you mechine with Dummy Load first and you can find PIM knowledge on owner machine web. **broken link removed** Regards. Somkit.
Feb 17, 2006 #4 B birdone Newbie level 6 Joined Sep 26, 2005 Messages 13 Helped 1 Reputation 2 Reaction score 1 Trophy points 1,283 Activity points 1,357 diplexer filter PIM bad connect or material